The following interesting question arose yesterday from what at first appeared to be some petty Twitter bickering: who was the worst president for civil liberties in US history? That question is a difficult one to answer because it is so reliant upon which of many valid standards of measurement one chooses; it depends at least as much on the specific rights which one understands the phrase "civil liberties" to encompass. That makes the question irresolvable in any definitive way, but its examination is nonetheless valuable for the light it sheds on current political disputes.